Frozen sea in Sweden

A rare chance to fly i Sverige. So I sent it at temperature below 32F with harsh freezing wind. The sea was frozen. Anyway if you know, would you please advice me how to keep fingers warm, those who usually fly in extreme cold weather. =====TBS stuffs I use===== Colibri FC, 4in1ESC, Powercube PDB, Unify pro 5G8, Crossfire nano RX, Immortal T antenna, Crossfire micro Tx stock antenna. -------------- Caddx srd2 camera Axii Vrx antenna Emax RSii 2306-2600kv motors Loki frame by Helipal Dogcom batteries. Gopro session5 ► Music Credit: LAKEY INSPIRED Track Name: "Angels" Music By: LAKEY INSPIRED @ https://soundcloud.com/lakeyinspired Official "LAKEY INSPIRED" YouTube Channel HERE - https://www.youtube.com/channel/UCOmy8wuTpC95lefU5d1dt2Q License for commercial use: Creative Commons Attribution 3.0 Unported "Share Alike" (CC BY-SA 3.0) License.